That's right. You can add your own images to RO for loading screens.
Go here for the thread, or... you can just follow my directions!
All you have to do is locate the skins folder in your RO folder, i.e.:
Gravity\RO\skin\[name of skin]
Take your images, name them "loadingXX" like, "loading01" etc., and just slap them in there. Images 800x600 or larger are fine, and they have to be jpegs. of course, you have to use the skin in-game for the images to show up as loading screens.